I have seen police horses wearing these rubber shoes. I saw a cop peal one of these off the hoof to clean it, and put it back on. They are shaped like the hoof, and you stretch them and turn them inside out to remove them. To put them back on, you turn them inside out, place them on the hoof, and then turn them back outside out with them now around the hoof. The horses seemed to not mind them at all, and it looked like a real cool way of putting shoes on a horse. No nails, can be removed, and cleaned out, and can be put back on in seconds